[AMRadio] 220 vac line

[Craig Heaton]

Like kicking a hornets' nest. Here goes $0.02

I haven't had a copy of the latest NEC for years, but........at the sub
panel the neutral buss and ground buss should be separate/not connected. A
ground from the sub panel should be run to the main panel & is connected the
ground buss in the main panel. My bet is the neutral & grounds are connected
in the main panel.  

Check with the local codes.......at times they add a twist to the NEC. In my
shack, a 8 X 12 building in the back yard, two additional ground rods had to
be driven because I have TV cable & a phone land line in the shack. Local
codes may also determine size of ground wire between sub & main panel. 

It's worth the cost to have an electrical inspector put their holy water and
approval on the job because of insurance issues.

Craig,

wd8kdg

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-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of Rick
Sent: Sunday, July 24, 2011 6:44 PM
To: 'Discussion of AM Radio in the Amateur Service'
Subject: [AMRadio] 220 vac line

I'm sure this has been discussed but my memory refuses to let the info go. I
am wiring a 220 VAC line into the new shack and I am uncertain about the
neutral and ground wires. I installed a new sub panel complete with
isolation buss bar for the neutral (white) wire from the 220 outlet. The new
sub panel has the neutral buss bar grounded to the main panel ground buss
bar. This is the way I understand it is supposed to be. The outlet I am
installing is a 20 amp 3 wire (two hot, one ground) unit. My concern is, do
I use the bare ground or the white neutral wire for the ground lug on the
outlet? Also, do I simply leave the unused of the two (white or bare)
disconnected in the new sub panel?

Thanks for any assistance and advice.

Rick / K5IAR

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